Home / 2,107.21-3,139.18-2,012.44

Finding the Fourth Proportional to 2,107.21, 3,139.18 and 2,012.44

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Solution

The fourth proportional to 2,107.21, 3,139.18 and 2,012.44 is: 2,998.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.21 : 3,139.18 = 2,012.44 : x
  2. Step 2: Convert to fraction form
    2,107.21/3,139.18 = 2,012.44/x
  3. Step 3: Cross multiply
    2,107.21x = 3,139.18 × 2,012.44
  4. Step 4: Simplify right side
    2,107.21x = 6,317,411.40
  5. Step 5: Solve for x
    x = 6,317,411.40/2,107.21
  6. Step 6: Final answer
    x = 2,998.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.